Herbal nanoparticles gain lot of attention because of their pharmaceutical importance. The present study reports the eco-friendly synthesis, characterization and their tyrosinase activity of silver nanoparticles (AgNPs) using aqueous extract of Bidens frondosa. The appearance of brown color indicated the formation of B. frondosa AgNPs. The Formation of AgNPs was confirmed by UV–Vis spectroscopy...

The flora of diatoms from Brazil has been studied by several authors from the beginning of the 19(th) up to now. Some of the old lists and descriptions are unknown or have been ignored by Brazilian researchers and the situation of the names cited was not assessed. Here we compiled a list of 101 taxa of diatoms from Brazil registered by Christian Gottfried Ehrenberg during the 19(th) century. We...

1. The first meeting of the Cancer Moon­ shot Task Force. Washington, DC: The White House, February 1, 2016 (https:/ / www .whitehouse .gov/ blog/ 2016/ 02/ 01/ first­meeting ­cancer­moonshot­task­force). 2. National Institutes of Health, National Cancer Institute, Vice President’s Cancer Ini­ tiative. Investments to launch the next phase of cancer research, 2016 (http://www .cancer .gov/ moons...

This paper describes a summit on Community Colleges in the Evolving STEM Education Landscape organized by a committee of the National Research Council (NRC) and the National Academy of Engineering (NAE) and held at the Carnegie Institution for Science on December 15, 2011. This summit followed a similar event organized by Dr. Jill Biden, spouse of the Vice President, and held at the White House...

Most analyses of food-sharing behavior invoke complex explanations such as indirect and delayed benefits for sharing via kin selection and reciprocal altruism. However, food sharing can be a more general phenomenon accounted for by more parsimonious, mutualistic explanations. We propose a game theoretical model of a general sharing situation in which food owners share because it is in their own...

A parasitic nematode from the stomach of Japanese eel Anguilla japonica Temminck et Schlegel in western Japan, previously identified as Heliconema longissimum (Ortlepp, 1922), was morphologically re-examined and compared with the previous descriptions. In addition, the third-stage larva of this nematode is described, based on the specimens of encapsuled larvae found in musculature of two crabs,...

The aim of this study was to determine the antibacterial and antifungal properties of the extracts, subextracts and essential oils of Bidens tripartita flowers and herbs. In the study, twelve extracts and two essential oils were investigated for activity against different Gram-positive Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus, Gram-negative bacteria Escherichia coli, E. coli...

Figure 1. Location, species identification and morphology of the spade-toothed beaked whale (Mesoplodon traversii). (A) Location of partial skulls found on the Chatham and White Islands, New Zealand, on Robinson Crusoe Island, Chile (red squares) and the two recently stranded specimens discovered on Opape Beach, New Zealand (black circle). (B) Neighbour-joining tree of control region and cytoch...

The material of Sphegina collected by René Malaise in Kambaiti, Myanmar, in 1934 includes S. (Sphegina) kumaoniensis Mutin and the following 35 new species: S. (Sphegina) uncinata, S. (Asiosphegina) achaeta, S. (A.) adusta, S. (A.) atricolor, S. (A.) bidens, S. (A.) bilobata, S. (A.) carinata, S. (A.) cerina, S. (A.) crassispina, S. (A.) crucivena, S. (A.) culex, S. (A.) cultrigera, S. (A.) ens...

Introduction Citizens for Midwifery, a consumer-based organization focusing on maternity care with a deep commitment to practical, health-improving changes in our health care system, is especially aware of the fundamental role of maternity care in the long-term health of mothers, babies and families. We present specific and practical suggestions below. We would like to see the Obama-Biden admin...